Hot water tank of water purifier and water purifier

By setting up a quick heat device in the hot water tank of the water purifier to assist in heating the outflow of hot water, the problem of insufficient hot water temperature during the peak period of hot water withdrawal by the public water purifier is solved, and the user's comfort in water withdrawal is improved Spend.

CN222352556UActive Publication Date: 2025-01-14NINGBO FOTILE KITCHEN WARE CO LTD
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Patent Information

Application Number
CN202420611044.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-27
Publication Date
2025-01-14
Estimated Expiration
2034-03-27

AI Technical Summary

Technical Problem

During the peak period of hot water withdrawal, the heated water purifier is not heated in time, resulting in insufficient hot water temperature or long waiting time, which affects the user's comfort.

Method used

A quick heating device is installed in the hot water tank of the water purifier, and the hot water flowing out is assisted through the quick heating pipe to ensure that the hot water temperature reaches the preset value and reduce the waiting time.

Benefits of technology

It effectively avoids the problem of insufficient hot water temperature, improves the user's comfort in water withdrawal, and ensures that the hot water reaches the preset temperature within a reasonable time.

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Abstract

The utility model relates to the technical field of intelligent electric appliances, in particular to a hot water tank of a water purifier and the water purifier. The hot water tank comprises a water tank shell, a water inlet pipeline, a water outlet pipeline, a heating device and a quick heating device; a drinking water storage space is defined by the water tank shell, and a heating part of the heating device is arranged in the storage space; the water inlet pipeline is connected with a water inlet of the water tank shell, and the water outlet pipeline is connected with a water outlet of the water tank shell; the quick heating device comprises a device shell and a quick heating pipe, and the quick heating pipe is arranged in the device shell; one end of the device shell is connected with a water outlet pipeline, and the other end of the device shell is connected with a hot water taking pipeline of the water purifier; the quick heating device is arranged to conduct auxiliary heating on flowing-out hot water, so that insufficient hot water temperature and too long hot water waiting time are avoided, and then the use comfort of a user is improved.
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Description

Technical Field

[0001] The present application relates to the field of intelligent electrical appliance technology, and in particular to a hot water tank of a water purifier and a water purifier. Background Art

[0002] Water purifiers include household water purifiers and public water purifiers. Household water purifiers have achieved intelligent interconnection with other household appliances, but currently public water purifiers are still non-intelligent water purification processing models. Specifically, public water purifiers are usually installed in public places, such as offices. For the use of public water purifiers, there will be a peak in hot water usage. When hot water is used during the peak period, the hot water temperature is not high or the waiting time for hot water is long due to untimely heating of the hot water. Summary of the invention

[0003] In view of the above-mentioned problems in the prior art, the purpose of the present application is to provide a quick heating device to assist in heating the outflowing hot water, thereby avoiding insufficient hot water temperature and long waiting time for hot water, thereby improving user comfort.

[0004] In order to solve the above problems, the present application provides a hot water tank for a water purifier, including a water tank shell, a water inlet pipe, a water outlet pipe, a heating device and a quick heating device;

[0005] The water tank shell encloses a storage space for drinking water, and the heating part of the heating device is arranged in the storage space;

[0006] The water inlet pipeline is connected to the water inlet of the water tank shell, and the water outlet pipeline is connected to the water outlet of the water tank shell;

[0007] The quick heating device comprises a device housing and a quick heating tube, wherein the quick heating tube is arranged in the device housing;

[0008] One end of the device shell is connected to the water outlet pipeline, and the other end of the device shell is connected to the hot water taking pipeline of the water purifier.

[0009] Preferably, the rapid heating tube comprises a spiral portion and a straight portion, and the spiral portion surrounds the outer side of the straight portion;

[0010] The straight portion overlaps with the axis of the water outlet pipe.

[0011] Preferably, the water outlet of the water tank shell includes a first water outlet and a second water outlet, and the water outlet pipeline includes a main water outlet pipeline, a first water outlet branch pipeline and a second water outlet branch pipeline;

[0012] One end of the first water outlet branch pipeline is connected to the first water outlet, and the other end of the first water outlet branch pipeline is connected to the water outlet main pipeline;

[0013] One end of the second water outlet branch pipeline is connected to the second water outlet, and the other end of the second water outlet branch pipeline is connected to the water outlet main pipeline.

[0014] Preferably, the first water outlet is located between the middle water level of the hot water tank and the bottom of the hot water tank; the middle water level is half of the water level position of the hot water tank when it is full of water;

[0015] The second water outlet is located at the bottom of the hot water tank.

[0016] Preferably, a solenoid valve is provided on the second water outlet branch pipe, and when the solenoid valve is in a start-up state, the second water outlet branch is in a passage state;

[0017] When the solenoid valve is in a closed state, the second water outlet branch is in a blocked state.

[0018] Preferably, the hot water tank further comprises a water level detection device, and the water level detection device is arranged at the top of the storage space.

[0019] Preferably, the water level detection device comprises a low water level detection tube, a middle water level detection tube and a high water level detection tube;

[0020] The length of the low water level detection tube is greater than the length of the middle water level detection tube;

[0021] The length of the middle water level detection tube is greater than the length of the high water level detection tube.

[0022] Preferably, the hot water tank further comprises a water inlet buffer device, and the water inlet buffer structure is arranged in the storage space;

[0023] The water inlet buffer device comprises a first fixed structure, a second fixed structure and a buffer surface, and the first fixed structure and the second fixed structure are both fixedly connected to the water tank shell;

[0024] The buffer surface is arranged between the first fixing structure and the second fixing structure;

[0025] The buffer surface is arranged opposite to the water inlet.

[0026] Preferably, a sewage outlet is provided on the water tank shell, and the sewage outlet is arranged at the bottom of the storage space.

[0027] On the other hand, the present application also provides a water purifier, which includes the hot water tank in the present application.

[0028] Due to the above technical solution, the hot water tank of a water purifier described in this application has the following beneficial effects:

[0029] By installing a quick heating device between the water outlet pipe of the hot water tank and the hot water intake pipe of the water purifier, the hot water can flow out of the hot water intake port after passing through the quick heating device, and the quick heating device can assist in heating the hot water to avoid insufficient hot water temperature or to avoid long waiting due to insufficient hot water, thereby improving the user's water intake comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the embodiments or prior art descriptions. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a schematic diagram of the hot water tank structure of the water purifier provided in the embodiment of the present application;

[0032] Figure 2 It is a schematic diagram of the bottom structure of the hot water tank of the water purifier provided in the embodiment of the present application;

[0033] Figure 3 It is a structural schematic diagram of a medium-speed heating device in a hot water tank of a water purifier provided in an embodiment of the present application;

[0034] Figure 4 It is a structural schematic diagram of a heating device in a hot water tank of a water purifier provided in an embodiment of the present application;

[0035] Figure 5 It is a structural schematic diagram of a medium-speed heat heating tube of a hot water tank of a water purifier provided in an embodiment of the present application;

[0036] Figure 6 It is a schematic diagram of the structure of multiple water outlets in the hot water tank of the water purifier provided in an embodiment of the present application;

[0037] Figure 7 It is a schematic diagram of the internal structure assembly of the hot water tank of the water purifier provided in the embodiment of the present application;

[0038] Figure 8 It is a structural schematic diagram of a water level detection device in a hot water tank of a water purifier provided in an embodiment of the present application;

[0039] Fig. 9 It is a structural schematic diagram of a water inlet buffer device in a hot water tank of a water purifier provided in an embodiment of the present application;

[0040] Fig.10It is a schematic diagram of the assembly of the overflow pipe in the hot water tank of the water purifier provided in the embodiment of the present application.

[0041] Among them, 1-water tank shell, 11-first water outlet, 12-second water outlet, 13-sewage outlet, 2-water inlet pipe, 3-water outlet pipe, 31-water outlet main pipe, 32-first water outlet branch pipe, 33-second water outlet branch pipe, 4-heating device, 41-heating part, 42-interface part, 5-rapid heating device, 51-device shell, 52-rapid heating pipe, 521-spiral part, 522-straight part, 6-solenoid valve, 7-water level detection device, 71-low water level detection pipe, 72-middle water level detection pipe, 73-high water level detection pipe, 8-water inlet buffer device, 81-first fixed structure, 82-second fixed structure, 83-buffer surface, 9-overflow pipe. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0043] The term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present application. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may include one or more of the features explicitly or implicitly. Moreover, the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0044] Combination Figure 1-3, introduces a hot water tank of a water purifier provided in an embodiment of the present application, including a water tank shell 1, a water inlet pipe 2, a water outlet pipe 3, a heating device 4 and a quick heating device 5; the water tank shell 1 encloses a storage space for drinking water, and a heating part 41 of the heating device 4 is arranged in the storage space; the water inlet pipe 2 is connected to the water inlet of the water tank shell 1, and the water outlet pipe 3 is connected to the water outlet of the water tank shell 1; the quick heating device 5 includes a device shell 51 and a quick heating pipe 52, and the quick heating pipe 52 is arranged in the device shell 51; one end of the device shell 51 is connected to the water outlet pipe 3, and the other end of the device shell 51 is connected to the hot water taking pipe of the water purifier.

[0045] In the embodiment of the present application, the water inlet pipe 2 is used to replenish drinking water into the water tank shell 1, and the water outlet pipe 3 is used to discharge the hot water in the water tank shell 1 to the hot water access port; the heating device 4 is used to heat the drinking water in the water tank shell 1 so that the drinking water in the water tank shell 1 is hot water; the quick heating device 5 is used to heat the drinking water flowing from the water tank shell 1 to the hot water access pipe so that the taken out hot water reaches a preset temperature.

[0046] refer to Figure 4 In the embodiment of the present application, the heating device 4 also includes an interface part 42, which is integrally arranged with the heating part 41, and the interface part 42 is fixedly connected to the water tank shell 1. The interface part 42 is used to connect with other devices, including but not limited to a power supply device and a control device.

[0047] In a specific embodiment of the present application, the water purifier includes a water purifier controller and a temperature detection device. The temperature detection device is arranged at the water outlet of the hot water tank. The temperature detection device is used to detect the water temperature of the water outlet of the hot water tank. The water purifier controller is communicated with the heating device 4 and the quick heating device 5 respectively. The water purifier controller controls the opening and closing of the quick heating device 5 based on the detection result of the temperature detection device. Specifically, when the water temperature at the water outlet of the hot water tank is lower than the preset temperature, the quick heating device 5 is started to enable the quick heating device 5 to assist in heating. The preset temperature can be 90°C or 95°C.

[0048] In an embodiment of the present application, a quick heating device 5 is provided between the water outlet pipe 3 of the hot water tank and the hot water intake pipe of the water purifier, so that the hot water flows out of the hot water intake port after passing through the quick heating device 5, and the quick heating device 5 performs auxiliary heating on the hot water to avoid insufficient temperature of the hot water or to avoid long waiting time due to insufficient hot water, thereby improving the user's water intake comfort.

[0049] In an embodiment of the present application, the hot water tank also includes a quick heating fixing device for fixing the quick heating device 5; specifically, the quick heating fixing device includes a fixing bracket and a C-shaped fixing ring, and the quick heating device 5 is fixed in the space between the fixing bracket and the C-shaped fixing ring.

[0050] In another embodiment of the present application, the heating part 41 of the quick heating device 5 can also be wrapped around the water outlet pipe 3.

[0051] refer to Figure 5 In the embodiment of the present application, the quick-heating heating tube 52 includes a spiral portion 521 and a straight portion 522 , the spiral portion 521 surrounds the outer side of the straight portion 522 ; the straight portion 522 overlaps with the axis of the water outlet pipe 3 .

[0052] In the embodiment of the present application, the quick-heating heating tube 52 is arranged to be a spiral portion 521 and a straight portion 522, the spiral portion 521 surrounds the outside of the straight portion 522 and the straight portion 522 overlaps with the axis of the water outlet pipe 3, thereby increasing the contact area between the quick-heating heating tube 52 and the drinking water, thereby increasing the quick-heating efficiency of the quick-heating device 5 and improving the reliability of the water purifier.

[0053] In a specific embodiment of the present application, the spiral portion 521 and the straight portion 522 are integrally formed.

[0054] In a specific embodiment of the present application, the two ends of the quick-heating heating tube 52 are a neutral wire end and a live wire end. Specifically, the spiral portion 521 corresponds to the neutral wire end, and the straight portion 522 corresponds to the live wire end; or the spiral portion 521 corresponds to the live wire end, and the straight portion 522 corresponds to the neutral wire end.

[0055] refer to Figure 6 In the embodiment of the present application, the water outlet of the water tank housing 1 includes a first water outlet 11 and a second water outlet 12, and the water outlet pipeline 3 includes a water outlet main pipeline 31, a first water outlet branch pipeline 32 and a second water outlet branch pipeline 33; one end of the first water outlet branch pipeline 32 is connected to the first water outlet 11, and the other end of the first water outlet branch pipeline 32 is connected to the water outlet main pipeline 31; one end of the second water outlet branch pipeline 33 is connected to the second water outlet 12, and the other end of the second water outlet branch pipeline 33 is connected to the water outlet main pipeline 31.

[0056] In the embodiment of the present application, a first water outlet 11 and a second water outlet 12 are provided so that hot water can flow out from the first water outlet 11, or from the second water outlet 12, or from both the first water outlet 11 and the second water outlet 12 at the same time, thereby improving the controllability of hot water extraction of the water purifier.

[0057] In the embodiment of the present application, the first water outlet 11 is located between the middle water level of the hot water tank and the bottom of the hot water tank; the middle water level is half of the water level position when the hot water tank is full of water; the second water outlet 12 is located at the bottom of the hot water tank.

[0058] In the embodiment of the present application, the first water outlet 11 is set between the middle water level and the bottom, and the second water outlet 12 is set at the bottom of the hot water tank, so that the second water outlet 12 can be used to discharge all the hot water in the hot water tank, thereby avoiding the drinking water in the hot water tank from settling for too long, thereby improving the reliability of the water purifier.

[0059] In the embodiment of the present application, a solenoid valve 6 is provided on the second water outlet branch pipeline 33. When the solenoid valve 6 is in the started state, the second water outlet branch is in the open state; when the solenoid valve 6 is in the closed state, the second water outlet branch is in the blocked state.

[0060] In the embodiment of the present application, by providing the solenoid valve 6 on the second water outlet branch pipeline 33, the reliability of the second water outlet branch pipeline 33 can be improved, thereby improving the controllability of the second water outlet branch pipeline 33 and thereby improving the controllability of hot water extraction of the water purifier.

[0061] In a specific embodiment of the present application, the hot water tank further includes an electromagnetic fixing device for fixing the electromagnetic valve 6 .

[0062] refer to Figure 7 In the embodiment of the present application, the hot water tank further includes a water level detection device 7, and the water level detection device 7 is disposed at the top of the storage space.

[0063] In the embodiment of the present application, by arranging a water level detection device 7 inside the hot water tank, the water level of the drinking water inside the hot water tank can be detected, thereby improving the control of the water level in the hot water tank, avoiding the accumulation of excessive hot water causing the quality of drinking water to deteriorate, and thus improving the safety of the water purifier.

[0064] refer to Figure 8 In the embodiment of the present application, the water level detection device 7 includes a low water level detection tube 71, a middle water level detection tube 72 and a high water level detection tube 73; the length of the low water level detection tube 71 is greater than the length of the middle water level detection tube 72; the length of the middle water level detection tube 72 is greater than the length of the high water level detection tube 73.

[0065] In a specific embodiment of the present application, when there are a large number of people, the water level of the hot water tank can be kept at a high level based on the high water level detection tube 73; when there is a normal flow of people, the water level of the hot water tank can be kept at a medium level based on the medium water level detection tube 72; when there are a small number of people, the water level of the hot water tank can be kept at a low level based on the low water level detection tube 71; thereby, the matching degree between the hot water in the hot water tank and the number of people can be improved, thereby improving the reliability of the water purifier in different application scenarios.

[0066] In a specific embodiment of the present application, the water level detection device 7 also includes a bottom water level detection tube, the length of which is greater than the length of the low water level detection tube 71; the distance between the bottom water level detection tube and the bottom of the storage space is 3-5 cm.

[0067] refer to Fig. 9 In an embodiment of the present application, the hot water tank also includes a water inlet buffer device 8, and the water inlet buffer structure is arranged in the storage space; the water inlet buffer device 8 includes a first fixed structure 81, a second fixed structure 82 and a buffer surface 83, and the first fixed structure 81 and the second fixed structure 82 are both fixedly connected to the water tank shell 1; the buffer surface 83 is arranged between the first fixed structure 81 and the second fixed structure 82; the buffer surface 83 is arranged opposite to the water inlet.

[0068] In the embodiment of the present application, a water inlet buffer device 8 is provided at the water inlet to divert the water at the water inlet, thereby preventing the water temperature in the hot water tank from dropping suddenly due to the influx of a large amount of drinking water when the water inlet replenishes drinking water to the hot water tank, thereby improving the temperature balance in the hot water tank and further improving the reliability of the water purifier.

[0069] In a specific embodiment of the present application, the water inlet buffer device is a U-shaped plate.

[0070] In another specific embodiment of the present application, the water purification buffer device is an Ω-shaped sheet.

[0071] In the embodiment of the present application, a sewage outlet 13 is provided on the water tank housing 1, and the sewage outlet 13 is arranged at the bottom of the storage space.

[0072] In the embodiment of the present application, a sewage outlet 13 is provided at the bottom of the storage space, so that drinking water that has been stored for a long time and impurities such as scale produced by heating can be discharged from the hot water tank, thereby improving the cleanliness of the hot water tank and the reliability of the water purifier.

[0073] refer to Fig.10 In the embodiment of the present application, an overflow pipe 9 is also provided in the hot water tank. There is an overflow space between the overflow pipe 9 and the top of the storage space. One end of the overflow pipe 9 is fixed to the top of the water tank shell 1 by an overflow fixing device; the other end passes through the bottom of the water tank shell 1 to allow overflowed drinking water or excess steam caused by heating to be discharged from the storage space, thereby improving the safety of the water purifier.

[0074] The working principle of the hot water tank in the embodiment of the present application is described below:

[0075] Under normal working conditions, the quick heating device 5 may be started or not started, the heating device 4 heats the drinking water in the storage space, and the quick heating device 5 may be started to perform auxiliary heating on the outflowing drinking water.

[0076] When the temperature of the drinking water in the storage space is insufficient, the quick heating device 5 is started, and the heating device 4 may be started or not. The quick heating device 5 heats the outflowing drinking water so that the temperature of the outflowing hot water reaches a preset temperature, and the heating device 4 may be started to assist in heating the drinking water in the storage space.

[0077] In addition, the hot water level in the hot water tank can be determined based on the number of water users to avoid the drinking water from settling for too long. Specifically, the hot water in the hot water tank can be drained through the second water outlet 12 at the bottom, and the drinking water that has been retained in the hot water tank for a long time can be drained through the sewage outlet 13.

[0078] The hot water tank in the embodiment of the present application has the following beneficial effects:

[0079] By arranging a quick heating device 5 between the water outlet pipe 3 of the hot water tank and the hot water taking pipe of the water purifier, the hot water can flow out of the hot water taking port after passing through the quick heating device 5, and then the quick heating device 5 can assist in heating the hot water to avoid insufficient temperature of the hot water or to avoid long waiting due to insufficient hot water, thereby improving the user's water taking comfort.

[0080] The embodiment of the present application also provides a water purifier, which includes the hot water tank in the embodiment of the present application.

[0081] In a specific embodiment of the present application, the water purifier also includes an insulation layer, which wraps the hot water tank in the embodiment of the present application.

[0082] The above description has fully disclosed the specific implementation methods of the present application. It should be pointed out that any changes made by technicians familiar with the field to the specific implementation methods of the present application do not deviate from the scope of the claims of the present application. Accordingly, the scope of the claims of the present application is not limited to the above specific implementation methods.

Claims

1. A hot water tank for a water purifier, characterized in that: It comprises a water tank shell (1), a water inlet pipeline (2), a water outlet pipeline (3), a heating device (4) and a quick heating device (5); The water tank shell (1) encloses a storage space for drinking water, and the heating part (41) of the heating device (4) is arranged in the storage space; The water inlet pipeline (2) is connected to the water inlet of the water tank shell (1), and the water outlet pipeline (3) is connected to the water outlet of the water tank shell (1); The quick heating device (5) comprises a device housing (51) and a quick heating tube (52), wherein the quick heating tube (52) is arranged in the device housing (51); One end of the device housing (51) is connected to the water outlet pipeline (3), and the other end of the device housing (51) is connected to the hot water extraction pipeline of the water purifier.

2. The hot water tank of the water purifier according to claim 1, characterized in that: The quick-heating heating tube (52) comprises a spiral portion (521) and a straight portion (522), wherein the spiral portion (521) surrounds the outer side of the straight portion (522); The straight portion (522) overlaps with the axis of the water outlet pipeline (3).

3. The hot water tank of the water purifier according to claim 1, characterized in that: The water outlet of the water tank housing (1) comprises a first water outlet (11) and a second water outlet (12), and the water outlet pipeline (3) comprises a main water outlet pipeline (31), a first water outlet branch pipeline (32) and a second water outlet branch pipeline (33); One end of the first water outlet branch pipeline (32) is connected to the first water outlet (11), and the other end of the first water outlet branch pipeline (32) is connected to the water outlet main pipeline (31); One end of the second water outlet branch pipeline (33) is connected to the second water outlet (12), and the other end of the second water outlet branch pipeline (33) is connected to the water outlet main pipeline (31).

4. The hot water tank of the water purifier according to claim 3, characterized in that: The first water outlet (11) is located between the middle water level of the hot water tank and the bottom of the hot water tank; the middle water level is half the water level of the hot water tank when it is full of water; The second water outlet (12) is located at the bottom of the hot water tank.

5. The hot water tank of the water purifier according to claim 3, characterized in that: The second water outlet branch pipeline (33) is provided with a solenoid valve (6), and when the solenoid valve (6) is in an activated state, the second water outlet branch pipeline is in a passage state; When the solenoid valve (6) is in a closed state, the second water outlet branch is in a blocked state.

6. The hot water tank of the water purifier according to claim 1, characterized in that: It also comprises a water level detection device (7), wherein the water level detection device (7) is arranged at the top of the storage space.

7. The hot water tank of the water purifier according to claim 6, characterized in that: The water level detection device (7) comprises a low water level detection tube (71), a middle water level detection tube (72) and a high water level detection tube (73); The length of the low water level detection tube (71) is greater than the length of the middle water level detection tube (72); The length of the middle water level detection tube (72) is greater than the length of the high water level detection tube (73).

8. The hot water tank of the water purifier according to claim 1, characterized in that: It also includes a water inlet buffer device (8), wherein the water inlet buffer structure is arranged in the storage space; The water inlet buffer device (8) comprises a first fixed structure (81), a second fixed structure (82) and a buffer surface (83); the first fixed structure (81) and the second fixed structure (82) are both fixedly connected to the water tank housing (1); The buffer surface (83) is arranged between the first fixing structure (81) and the second fixing structure (82); The buffer surface (83) is arranged opposite to the water inlet.

9. The hot water tank of the water purifier according to claim 1, characterized in that: The water tank shell (1) is provided with a sewage outlet (13), and the sewage outlet (13) is arranged at the bottom of the storage space.

10. A water purifier, characterized in that: A hot water tank comprising a water purifier as described in any one of claims 1 to 9.